Nasal tanning sprays contain Melanotan II which is banned in the UK and some users have been hospitalised. We would urge residents not to use these products. Dark side: tanning injections 'may be lethal' Nasal tanners claim to work by using Melanotan II, a chemical that darkens skin pigmentation. It is illegal to sell medicinal products containing Melanotan II in the UK but since the tanners are sold Melanotan II (Tan Jabs): Why They're Not Worth The Risk Nasal tanning sprays linked to skin cancer, trading standards officers warn Consumer affairs The Guardian